Asyn,

I simply cannot get over the astounding good fortune that Avast shot at me completely by surprise of this threat. It was vividly displayed in front of me by the results of carrying out a routine Smart scan and concerned the Network section. The warning panel I showed in my OP.

But Asyn, without you giving me that link, I would never have known about the MS out-of-bounds Windows XP update security patch. Its a miracle !

A billion thanks.
Wittmann